Hear Rare Demo Of Amy Winehouse "Back To Black"

Mark Ronson, producer and late Amy Winehouse collaborator, revealed a rare demo version of Winehouse's song "Back to Black" yesterday on his 6 Music Show. The track which Ronson produced is unmixed and unmastered but still is able to capture Winehouse's infectious voice with the rough mix only adding an all-too eerie aspect to the track.